Original story was actually Daily Mail:
http://www.dailymail.co.uk/news/article-3423340/Libyan-ISIS-chiefs-living-fear-mystery-sniper-three-terror-group-s-men-assassinated-long-range-marksman.html
quote: There once were some hajis from ISIS, Who found that they had quite a crisis, A sniper reloaded, Their heads then exploded, Just like their explosive devices